johnston



(No Model.) 2 Sheets-Sheet 1.

H. L. JOHNSTONE.

OIL 0UP.

No.294,134. 'PatentedFeb.26.1884.

ape. With a s as a v I l-nvjani'm T.

(No Model. 2 Sheets-Sheet 2.

H. L. JOHNSTONE.

OIL 0UP.

N0. 29 L134. Patented Feb. 26, 1884.

Fi jl Witnesses- Invntnn.

UNITED STATES PATENT OFFICE.

HENRY L. JOHNSTON, OF PALMETTO, GEORGIA.

OIL-CUP.

SPECIFICATION forming part of Letters Patent No. 294,134, dated February26, 1884.

Application liled January 16, 1884.

To all whom it may concern:

Be it knownthat I, H. L. JOHNSTON, a citizen of the United States,residing at Palmetto, in the county of Campbell and State of Georgia,have invented certain new and useful Improvements in Oil-Cups, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

My invention has relation to oil-cups or lubricators for all kinds ofjournal-bearings; and its object is to provide an oil-cup of this kind,wherebya givenquantity of oil or similar fluid lubricant may in a verysimple and effective manner be fed to the journal; and to this end thenovelty consists in the construction of the device, as will behereinafter more fully described,and particularly pointed out in theclaim. I

In the accompanying drawings the same letters of reference indicate thesame parts of my invention.

. Figure 1 is a sectional elevation of my improved oil-cup. Fig. 2 is atransverse central section through the upper part of the cup, showingthe vent and its stopper; and Fig. 3 is a plan view of a vehi'cle-hub,showing the manner of securing the oil-cup between the spokes of thewheel when applied to that use.

A is the oil-cup proper or reservoir, and is provided with a screw-cap,a, for filling. The cup A is wedge-shaped in form, and its sides B Bextend beyond the top 0, so as to form ears or lugs c c, by means ofwhich the cup may be secured by screws to the spokes of acarriage-wheel, as shown very clearly in Fig. 3.

D is a central tube, its upper end secured in the top 0, and extending ashort distance through the bottom of the cup.

E is a piston-rod, working in the tube D through the screw-plug F, andit is provided with a handle, G, for operating it. This handle G has asmall angular arm, H,the free'end of which forms a stopper,I,for thevent-hole K.

Upon the lower end of the piston-rod E is secured a piston, L, and abovethis is a second piston, N, the two being separated by the collar O.

Between the upper piston, N, and the screwplug F is a spiral spring, P,which serves to force the piston-rod down to the full extent of itsstroke. The tube 1) is provided (No model.)

with two or more inlet-holes, ss, communicating with the interior of thereservoir A, and in the normal position of the device these holes areclosed by the piston L, which extends a short distance below them whenthe rod is down.

In practice, the device is properly secured in place, and the screw-capa removed, to fill the reservoir, which being done, the cap is returnedto its place. The oil or lubricant is now confined in the reservoir, andif the handle G be raised, the holes s s are opened by the piston Lpassing above them, and the oil in the reservoir flows through the holes8 8 into the lower portion of the tube D, and thence to the axle orjournal at the same time the holes 8 s are opened. The vent K is alsoopened by the stopper I being attached to the handle and raised with it.This permits a very free flow of the oil, and of course greatlyfacilitates the operation; and it will readily be seen that the cup is avery economical one, as there is no possibility of wasting any of theoil, but, on the contrary, itis used up to the last drop.

In practice I have found cork to be an excellent material for thepistons; but of course soft wood, rubber, or similar substances willanswer the purpose equally well.

While I have shown the oil-cup attached to a carriage-wheel, I do notwish to confine myself in its use thereto, as it will be readily seenthat it is applicable to all sorts of journal-bearings Wherever statedquantities of oil are needed.

Having thus fully described my invention,

what I claim as new and useful, and desire to secure by Letters Patentof the United States, 1s-

The wedge-shaped oil-cup A, having vent K, and provided with the centraltube, D, having inlet-holes s s, and the piston-rod E, provided withpiston L, spring 1?, handle G, and stopper-arm H I, substantially as andfor the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

L. JOHNSTON.

Witnesses:

L. S. Rom, H. M. REID.

